67 cuda caster woes

After a complete front end rebuild on manual steer street car including new t bars, LCA, UCA (QA-1)took car in for wheel alignment. Cannot get caster below +6 to +8 degrees making it hard to steer on slow turns. UCA adjustments maxed out. Camber -.05 and -.09. Front UCA bushings tight to frame. Rear bushings out all the way. No adjustment left to reduce caster. Would have liked +2 to +3 degrees caster. Any thoughts for correction?